Oxidation Numbers Flashcards
1
Q
What is the oxidation number of elements that are uncombined?
A
0
2
Q
What is the oxidation number of elements that are combined with the same element?
A
0
3
Q
What is the oxidation number of a simple, monoatomic ion?
A
The same as its charge
4
Q
What is the oxidation number of a molecular ion?
A
The overall charge - the oxidation numbers of the single atoms inside the molecular ion should add up to the overall charge
5
Q
What is the oxidation number for a neutral compound?
A
0 - each element in the compound will have its own oxidation number
6
Q
What is the oxidation number of oxygen most of the time?
A
-2
7
Q
What is the exception for oxygens oxidation number?
A
Peroxide = -1
Molecular oxygen = 0
8
Q
What is the oxidation number for hydrogen?
A
+1
